Pet fountain



FIG. 1 is a perspective view of a pet fountain in accordance with the present design;

FIG. 2 is a front view thereof; and,

FIG. 3 is a back view thereof.

Portions depicted in broken lines are not claimed.

Any portions of the interior of the fountain which are not visible in the drawings form no part of the claimed design. 

CLAIM The ornamental design for a pet fountain, thereof as shown and described. 